comparison audioio/ClipMixer.cpp @ 320:7105604e9803 tonioni

note release is now a ramp

                 mixNote(toBuffers,
                         levels,
                         note.frequency,
                         start < 0 ? -start : 0,
                         start > 0 ?  start : 0,
-                        durationHere);
+                        durationHere,
+                        ending);
             }
         }
 
         if (!ending) {
             NoteStart adjusted = note;

 ClipMixer::mixNote(float **toBuffers,
                    float *levels,
                    float frequency,
                    int sourceOffset,
                    int targetOffset,
-                   int sampleCount)
+                   int sampleCount,
+                   bool isEnd)
 {
     if (!m_clipData) return;
 
     float ratio = getResampleRatioFor(frequency);
     
-    //!!! todo: release time
+    float releaseTime = 0.01;
+    int releaseSampleCount = round(releaseTime * m_sampleRate);
+    if (releaseSampleCount > sampleCount) {
+        releaseSampleCount = sampleCount;
+    }
+    float releaseFraction = 1.f/releaseSampleCount;
 
     for (int i = 0; i < sampleCount; ++i) {
 
         int s = sourceOffset + i;
 

             value += m_clipData[osi];
         }
         if (osi + 1 < m_clipLength) {
             value += (m_clipData[osi + 1] - m_clipData[osi]) * (os - osi);
         }
-        
+         
+        if (isEnd && i + releaseSampleCount > sampleCount) {
+            value *= releaseFraction * (sampleCount - i); // linear ramp for release
+        }
+
         for (int c = 0; c < m_channels; ++c) {
             toBuffers[c][targetOffset + i] += levels[c] * value;
         }
     }
 }